Dogs have been man's pet for over 14,000 years.
224
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A giraffe's kick is so powerful that it can decapitate a lion.
216
Sharks have been on the planet longer than trees.
14
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
Sloths take two weeks to digest their food.
243
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5